# NEW- Multi-Channel Chat: You now can enjoy real time conversation with your contacts, right from your favorite messaging application.- Do Not Track: This option has been implemented as an addition to Search the Web.- Ubuntu One is now supported in Filelink - the option to upload large attachments to online storage services.- New User Interface: Thunderbird is replicating the new look and feel of Mozilla Firefox in an effort to provide a similar user experience across all Mozilla software desktop or mobile and all platforms.# FIXED- Various fixes and performance improvements- Various security fixes